Then again, there is young and nubile Brooke Shields in her controversial role as a child prostitute. They tried to pass that film off as "art", but it did feature full frontal shots of the naked Shields. The French pass off their porn as art all the time. It is very easy to cross the line.

Comics are not "real", like hentai. But it is still porn if it was drawn with the specific intent to depict graphic sexual matter. Personally, I think the stuff in this grey area between art and full-blown child pornography should be censored by age, but then again, my rather large collection of pornography makes me somewhat of a hypocrite for saying that.